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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 11 |
| 6 | 22 |
| 7 | 33 |
| 8 | 56 |
| 9 | 93 |
| 10 | 162 |
| 11 | 264 |
| 12 | 454 |
| 13 | 765 |
| 14 | 1307 |
| 15 | 2237 |
| 16 | 3849 |
| 17 | 6611 |
| 18 | 11472 |
| 19 | 19831 |
| 20 | 34446 |
| 21 | 59865 |
| 22 | 104293 |
| 23 | 181561 |
| 24 | 316924 |
[1,1,2,4,7,11,22,33,56,93,162,264,454,765,1307, 2237,3849,6611,11472,19831,34446,59865,104293, 181561,316924] |